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When multiplying exponents with same base you can add the exponents: $2x^7x$
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$2x^{8}+4=0$
Learn how to solve equations problems step by step online. Solve the equation 2x^7x+4=0. When multiplying exponents with same base you can add the exponents: 2x^7x. Factor the polynomial 2x^{8}+4 by it's greatest common factor (GCF): 2. Divide both sides of the equation by 2. Simplifying the quotients.